The calculated distance (air line) between Saalfelden am Steinernen Meer and Linz is approximately 90 miles respectively 145 kilometers.
By car or train, the actual journey to Linz is certainly longer, as only the direct route (as the crow flies) between Saalfelden am Steinernen Meer and Linz has been calculated here.
Air line (approximately)
145 kilometers
78 nautical miles